<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <ul>
        <li v-for="(item,index) in list" :key="item.id">
            <span>{{item.name}}</span>
        </li>
    </ul>
    <button  @click="go">走一走</button>
  </div>

  <script src="./vue.js"></script>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        list: [
            {id:1,name:'帅哥'},
            {id:2,name:'美女'},
            {id:3,name:'程序猿'}
        ],
        index:0
      },
      methods: {
       go(){
        // 将第一个元素移动到列表末尾
          const firstItem = this.list.shift();
          this.list.push(firstItem);
       }
      }
    })
  </script>

</body>

</html>